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Pseudogastromyzon spp.
January 31, 2011
4:56 pm
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Matt
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Has anyone got references for these species? I can't find a thing!

Cake or death?
January 31, 2011
6:40 pm
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torso
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QUOTE (Matt @ Jan 31 2011, 05:39 PM) < {POST_SNAPBACK}>
Has anyone got references for these species? I can't find a thing!

none. only the papers I sent you.
would some pics help? best to adress to mr. Tree
cheers Charles

January 31, 2011
10:37 pm
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Matt
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Got some pics from him already. /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />

I supposed it would be difficult with this genus but yes please Charles if you have any more images please send.

How are these behaviour-wise compared to say, Gastromyzon and Sewellia?

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January 31, 2011
11:10 pm
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torso
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QUOTE (Matt @ Jan 31 2011, 11:20 PM) < {POST_SNAPBACK}>
How are these behaviour-wise compared to say, Gastromyzon and Sewellia?

different. no other species are so often on the glass. they try to chase away others in a kind of "direct attack". gastromyzon don t appreciate it, only large g stellatus can make the situation turn to their favour. so sewellia do - they are the most dominant ones after all. of courso they wan t do any harm at all, but the constant attakcs can irritate smaller specimen.
cheers Charles

February 5, 2011
1:20 pm
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Mark Duffill
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I know the two P. fasciatus that I had were total shits, they would even chase and harrass the sewellia which they didnt appreciate one bit.

I think cheni tend to form a pecking order of both males and females, the alpha male and alpha female tend to run the show a bit like botia, unlike other hillies that I have had.

February 8, 2011
8:23 am
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Matt
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Hi Odyssey thanks for posting the pics! Charles has also sent me some great stuff and this one appears to be P. myersi. Mind if I ask how you got the id Charles?

Attached files

[Image Can Not Be Found] [Image Can Not Be Found]

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February 8, 2011
11:18 am
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torso
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QUOTE (Matt @ Feb 8 2011, 09:06 AM) < {POST_SNAPBACK}>
Mind if I ask how you got the id Charles?

as the whole group looked coherent I made some pics from the underside. on one I worked out the difference according to the clue on loaches (it is amongst the pics I have sent you). much easier to see is the difference of the pattern: cheni shows as very clear pattern - bright and dark - and with larger extensions of the single patterns.
I went back the to my archived pics and found it coherent as result - specimen always in the right file back the last years.
the specimen which cam last week as p lineatus seem all to be myersi - no stripes at all. pics to follow.
cheers Charles

February 13, 2011
7:42 pm
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The.Dark.One
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They've got some P. fasciatus in at Ferrybridge Aquatics at the moment, £5.95 each.

See my catfish images at http://www.scotcat.com/thedarkone/thedarkone.htm
February 13, 2011
10:15 pm
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torso
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QUOTE (The.Dark.One @ Feb 13 2011, 08:25 PM) < {POST_SNAPBACK}>
They've got some P. fasciatus in at Ferrybridge Aquatics at the moment, £5.95 each.

that's interesting: just the fact that they are labelled as fasciatus. round here they don't even try to verify, so all is p cheni ...
do they look like this? or: is this a different species?

[Image Can Not Be Found]

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[Image Can Not Be Found]

February 13, 2011
11:18 pm
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The.Dark.One
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Hi

They aren't labelled as anything in terms of scientific name, it's just what they looked like to me. I got some crap images, can't make them out very well:

Attached files

[Image Can Not Be Found] [Image Can Not Be Found]

See my catfish images at http://www.scotcat.com/thedarkone/thedarkone.htm
February 14, 2011
8:40 am
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Matt
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Body patterning is different on those latter fish right?

Loose translation of Sauvage's description of Psilorhynchus fasciatus, not that it helps much. No figures, unfortunately:

D. 9; A. 7; V. 9; L. lat. 80.

'Head very depressed. Prismatic body, its height fitting almost six times into the length without the caudal. Head length contained four times in the same dimension. Mouth slightly split, lower lip slightly less jagged. Eyes small, placed very back. Dorsal slightly truncate, opposite to the ventrals, and located in the anterior portion of the space between the tip of the snout and the origin of the caudal; pectorals large reaching the ventrals, which arrive at the anus; anal low, situated far back; caudal sub-truncate, measuring the length of the head. Brownish body with transverse bands wide and dark; pectoral, dorsal and caudal fins varied dark shades.
Western Fukien, at an altitude of 1200 meters: A. David.'

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February 14, 2011
10:14 pm
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The.Dark.One
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I think it is just because the fish in my photos were not yet settled and the conditions to take photos were poor.

See my catfish images at http://www.scotcat.com/thedarkone/thedarkone.htm
February 15, 2011
7:55 am
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Matt
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Ah. /rolleyes.gif" style="vertical-align:middle" emoid=":rolleyes:" border="0" alt="rolleyes.gif" />

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February 15, 2011
9:02 pm
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torso
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the description would fit or am I wrong?

March 8, 2011
2:08 pm
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Matt
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Yes it seems to Charles.

How about diet - are these biofilm grazers or micropredators?

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March 8, 2011
9:16 pm
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torso
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they take all they can get. s. wui is said to be the "fleshy" type. I can't see a difference.
about biofilm: I still can't provide that natural looking, algae-covered sorroundings. so it stays with all sorts of frozen stuff, artemia and pellets. of course s. puliensis like nibbling cucumbers and so on. but it seems to be - as for other hillies - more a good pasttime. keeps them busy, what they are anyway. puliensis much more than wui. these become very dominant e.g. when bloodworms are around and even try to push large g. flavatra.
I hope that helps a little.
cheers Charles

March 9, 2011
10:05 am
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Matt
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It does, thanks Charles. /thumbs_up.gif" style="vertical-align:middle" emoid=":thumbsup:" border="0" alt="thumbs_up.gif" />

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March 10, 2011
1:15 pm
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Matt
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What's the incubation period for the eggs? Conflicting reports online ranging from 5 days to 2 weeks...

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March 11, 2011
9:57 am
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Matt
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This is really doing my head in - can't even find diagnostic characters for the genus! Nnngh... /rolleyes.gif" style="vertical-align:middle" emoid=":rolleyes:" border="0" alt="rolleyes.gif" />

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